| 3 Months | 1 Year | 5 Years | 10 Years | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| (Tx 2006 - 2007) | (Tx 2006 - 2007) | (Tx 2002 - 2007) | (Tx 1997 - 2007) | ||||||||||
| N | % | Std. Err. | N | % | Std. Err. | N | % | Std. Err. | N | % | Std. Err. | ||
| Total | All | 1,761 | 88.7% | 0.8% | 1,761 | 84.8% | 0.9% | 5,304 | 73.4% | 0.8% | 9,836 | 55.0% | 0.9% |
| Yearly Center Volume | 0-3 | 132 | 87.1% | 2.9% | 132 | 85.6% | 3.1% | 481 | 72.4% | 2.6% | 983 | 51.9% | 3.5% |
| 4-6 | 235 | 84.2% | 2.4% | 235 | 78.5% | 2.7% | 688 | 70.1% | 2.2% | 1,150 | 51.2% | 2.7% | |
| 7-10 | 380 | 88.9% | 1.6% | 380 | 85.4% | 1.8% | 811 | 75.2% | 1.8% | 1,757 | 58.7% | 2.1% | |
| 11-17 | 316 | 89.6% | 1.7% | 316 | 86.0% | 2.0% | 1,051 | 74.8% | 1.8% | 2,443 | 56.6% | 1.9% | |
| 18+ | 698 | 90.1% | 1.1% | 698 | 85.8% | 1.3% | 2,273 | 73.4% | 1.2% | 3,503 | 54.4% | 1.3% | |